A nonreentrant arrhythmia due to a dual atrioventricular nodal pathway.
A 33-year-old woman presented with an atypical arrhythmia. The electrophysiologic study revealed dual atrioventricular nodal pathways. The difference in conductivity of these tracts enabled simultaneous atrioventricular conduction with a double ventricular response to a single atrial impulse. This disturbance is uncommon. Lack of awareness of the existence of dual nodal pathway can cause diagnostic difficulties and therapeutic errors.
Mádle
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Department of Medicine I, Faculty Hospital, Plzen, Czechoslovakia.
D000328:Adult; D001283:Atrioventricular Node / Q000002:abnormalities*; D005260:Female; D006329:Heart Conduction System / Q000002:abnormalities*; D006801:Humans; D013614:Tachycardia, Paroxysmal / Q000503:physiopathology*; D013617:Tachycardia, Supraventricular / Q000503:physiopathology*